If your friend Lily was ill yesterday, and she had a stomachache, you should visit her, find out about her illness and give her some reasonable suggestions.

I heard that Lily fell down yesterday. She has a stomach. So I went to see her today, and I know why she was ill. She told me that she ate a lot of meat yesterday, which is the reason for her stomachache.

I suggest that she see a doctor first, so that she can get well soon after taking some medicine. More importantly, I told her not to eat meat for a few days. She'd better eat some healthy food. Every day, she should eat some fruits and vegetables. She will be healthier and stronger in this way.

Written by myself, for reference only. Come on ~